I have worked with an AD FAE on this design. I have a ADP1071 using a custom BH mag transformer. Set up to generate +/-12V out. I have several boards that with the populated componets per schemo, no issues, starts right up....other pcbs it wont start up.
FAE said layout looked good. I had to set OVP to 0V for it to work...(first go at this , it wouldnt start until I set OVP to 0 volts...).
see page 4 of schemo.
one board, i installed C58 = 100pF and it started up ok.. another board, it wouldnt...
THE vreg VOLTAGE IS definetly on (~ 11V)
kelvin type connections at R83 ande R79 per datasheet.
heavy gnd plane ...on both sides....
under xfrmer cleared out (no copper from top to bottom).
q: ANY SUGGESTED LAYOUT TOPOLOGY SIMILIAR TO THE WAY LINEAR TECH WOULD GIVE "BASIC" LAYOUT TOPOLOGY?